Actually, they might have added the largest auditorium (seen to the right in the above photos)AFTER the building housing the twins was first constructed in 72. The first film that I remember seeing in the large auditorium was “Star Wars” in 1977, and “Close Encounters” (1977). “Earthquake” (1974) was definitely in one of the twins in the main building, as was “The Towering Inferno” (1974).